Gallery: Antares rocket explodes

The Japanese space agency has delayed the planned Sept. 30 launch of an HTV space station cargo ship to repair a leak in the vehicle, clearing the way for Orbital ATK to slip the launch of its Cygnus supply ship from Aug. 22 to the second half of September to complete tests and analysis of its re-engined Antares rocket, officials said Wednesday.

Orbital Sciences Corp. has selected a new first stage propulsion system for its Antares rocket that will offer improved performance for launches beginning in 2017, the company’s chief executive said.

This photo gallery shows the commercial Cygnus cargo resupplier for the International Space Station on Monday at Kennedy Space Center being encapsulated in the United Launch Alliance Atlas 5 rocket’s payload fairing for the planned Dec. 3 liftoff.